Optimal Arena/Raid Team Help

For fleet bear in mind zetas

1 you need Tarkins ship at 5 star
2 to get Tarkins ship at 5 star you need 5 four star dark side ships
3 to do the zeta mat challenge you need 8 5 star ships

I suppose if you are farming for r2d2 event you should farm for cls too.

Also bear in mind mods. There are people who know a lot more about mods than I do but the level 11 circle mod on boba is one of your better mods and you are not using it on your arena team.

Right now Sith is still your best bet, unfortunately, because it's the only thing you've really worked on, and you don't have most of the meta characters. You could try to build up and run a Wiggs team, but without Chaze I'm not sure that would serve you any better. I'd focus on getting the legendary characters for now.